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Merge pull request #621 from npostavs/dfs-extra-modes2

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find parents for extra-modes too (v2)
This commit is contained in:
Noam Postavsky 2015-10-11 14:51:56 -04:00
commit ac3fe83247
2 changed files with 45 additions and 20 deletions
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33
yasnippet-tests.el
View File

@ -491,15 +491,40 @@ TODO: correct this bug!"
yet-another-c-mode
and-also-this-one
and-that-one
;; prog-mode doesn't exit in emacs 24.3
;; prog-mode doesn't exist in emacs 24.3
,@(if (fboundp 'prog-mode)
'(prog-mode))
emacs-lisp-mode
lisp-interaction-mode))
(observed (yas--modes-to-activate)))
(should (null (cl-set-exclusive-or expected observed)))
(should (= (length expected)
(length observed))))))))
(should (equal (sort expected #'string<) (sort observed #'string<))))))))
(ert-deftest extra-modes-parenthood ()
"Test activation of parents of `yas--extra-modes'."
(yas-saving-variables
(yas-with-snippet-dirs '((".emacs.d/snippets"
("c-mode"
(".yas-parents" . "cc-mode"))
("cc-mode"
(".yas-parents" . "yet-another-c-mode and-that-one"))
("yet-another-c-mode"
(".yas-parents" . "c-mode and-also-this-one lisp-interaction-mode"))))
(yas-reload-all)
(with-temp-buffer
(let* ((_ (yas-activate-extra-mode 'c-mode))
(expected `(,major-mode
c-mode
cc-mode
yet-another-c-mode
and-also-this-one
and-that-one
;; prog-mode doesn't exist in emacs 24.3
,@(if (fboundp 'prog-mode)
'(prog-mode))
emacs-lisp-mode
lisp-interaction-mode))
(observed (yas--modes-to-activate)))
(should (equal (sort expected #'string<) (sort observed #'string<))))))))
(ert-deftest issue-492-and-494 ()
(defalias 'yas--phony-c-mode 'c-mode)

32
yasnippet.el
View File

@ -728,22 +728,22 @@ defined direct keybindings to the command
(defun yas--modes-to-activate (&optional mode)
"Compute list of mode symbols that are active for `yas-expand'
and friends."
(let (dfs)
(setq dfs (lambda (mode &optional explored)
(push mode explored)
(cons mode
(loop for neighbour
in (cl-list* (get mode 'derived-mode-parent)
(ignore-errors (symbol-function mode))
(gethash mode yas--parents))
when (and neighbour
(not (memq neighbour explored))
(symbolp neighbour))
append (funcall dfs neighbour explored)))))
(remove-duplicates (if mode
(funcall dfs mode)
(append yas--extra-modes
(funcall dfs major-mode))))))
(let (dfs explored)
(setq dfs (lambda (mode)
(unless (memq mode explored)
(push mode explored)
(loop for neighbour
in (cl-list* (get mode 'derived-mode-parent)
(ignore-errors (symbol-function mode))
(gethash mode yas--parents))
when (and neighbour
(not (memq neighbour explored))
(symbolp neighbour))
do (funcall dfs neighbour)))))
(if mode
(funcall dfs mode)
(mapcar dfs (cons major-mode yas--extra-modes)))
explored))
(defvar yas-minor-mode-hook nil
"Hook run when `yas-minor-mode' is turned on.")